Window-sash lock.



W. CUNNINGHAM.

WINDOW SASH LOCK.

APPLICATION nun OCT. 6, 1911.

1,040,156. Patnted 0@t. 1,1912.

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WINDOW SASH LOOK.

APPLICATION FILED OUT. 6, 1911.

Patent-ea 0011.1, 1912.

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15 efficiency spective view of a window including sashes shownpartlyppenwith the lmproved UNITED STATES PATENT OFFICE;

WIFLLIAH CUNNINGHAM, OF NEW YORK, N. Y.

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' Specification of Letters men.

Patented Oct. 1, 1912.

Application filed October 6, 1911. Serial in. 653,237.

To all it may concern:

Be it known that 1, WILLIAM CUNNING- HAM, a citizen of the UnitedStates, residin I at New York, in the countyof New Yor 5 and State ofNew York, have invented 'certain new and usefu Improvements in WindowSash Locks, of which the following is a: speclfication.

This invention relates to improvements in attachments for window sashfor locking the same against surre titious opening or surreptitiousmovement rom a stationary position when partly opened, and has for itsobject to improve the construction and increase the and utility ofdevices of this character.

Another object of the invention is to provide a device of this characterwhich may be attached without structural change to window sashes ofvarioussizes and to window casings or frames of various forms and whichoperates to eifectuallyprevent the opening of the sash from a closedposition and to lock thesash from movement from a partly openedposition, thereby producing an effectual burglar-proof lockingattachment. With these and other objects in. vlew, the inventionconsists in certain novel features of construction as hereafter shownanddescribed, and then specifically pointed but in the claims, and inthe drawings illustrative of the preferred embodiment of the invention:Figure 1 is a side view of a portion of a window frame with the meetmgrail portions of the sash in section with the improved devices applied;Fig. 2 is a section on the line 22 of Fig. 1; Fig. 3 is a perspec tiveview of the supporting plate of the vertical bolt; Fig. 4. is aperspective view of the perforated plate for the up er sash; Fig. 5 is aperspective view of t e horizontal locking bolt; Fig. 6 isa perspectiveview of the locking bolt housing. Fig. 7 is a ptelp locking deviceapplie v The improved device may be applied to sashes of various sizesand to casings and frames-bf various forms, and forthe purpose ofillustration thei'mproveddevice is.

shown applied to an ordinary construction of sash and frame, and in thedrawings thus employed, 10 re resents a portion of a win- 1 dots-frame,11 t e meeting railportionofthe lower sash, 12 the meeting rail portionof the upper sash, 13 a portion of one of the stiles or side members ofthe upper sash, 14 the parting stop and 15 the inslde stop.

The improved device com rises a housing or guide member 16 throughwhicha lockmg bolt 17 is slidably engaged, the bolt 17 being referred to forthe purpose of this desoription as the horizontal bolt.- The housing 16is formed with a longitudinal slot 18 and atransverse slot 19communicating with the longitudinal slot at the inner end, and the bolt17 is rovided withfa lateral pin-20 which slides t rough the horizontalslot 18 and enters the transverse slot 19 when the The slot 18 isopenatthe inner end of the housing so-that the bolt 17 may be entirely removedfrom the housing when r ulred. ttached. to the inner face of the stile13 .bolt is rotated at the inner end of its move ment as hereafterexplained.

of the upper sashis a plate 21 having a plurality of; apertures 22spaced apart and into one of-which the inner end of the bolt 17 'enterswhen the lower sash is elevated or the upper sash lowered. The plate 21is secured to the stile member 13 by'screws or other suitable fasteningdevices 23. The plate 21 is so located that the bolt 17 entersthelowermost aperture 22 when the two sashes are in closed relations or.with their meeting rails 11-12 engaged as shown in Fig. 1. By thisarrangement it will be obvious that the sashes may be locked either inclosed or partly opened relations by simply moving person. The apertures22 maybe spaced any suitablgu'edlstance apart and any requlred .nu rfofapertures may be emloyed, l generally. the apertures Wlll be spacedabout one inch apart, but this.

distance may be varied as required.

Ata'its inner end thehorizontal 17 "to employ the pine except to holdrotated by the fingers of the operator.

to be hereafter explained.

is provided with a threaded eye 24, the eye beingso arranged that itpresents its opening vertically when the pin 20 is rotated to cause itto enter the short slot 19 the object Connected to the frame 10 betweenthe outside stop 15 and the easing-25 is a block 26, the outer face ofthe block being preferably flush with the outer face of the stop 15.Connected to the block 26 by screws or other suitable fastening devices27, is a plate 28 having spaced ears 2930, the ears having threadedapertures therethrough.

.Fitting through the threaded apertures of the ears 29-3() is a threadedbolt 31, and engaging over the bolt between the ears 29-30 is a lock nut32, preferably with a milled outer surface'to enable the nut to befreely The plate 28 with its ears 2930 will be so located upon the blockthat when the horizontal bolt 17 is disposed in its inward position,'

or with its inner end engaged in one of the apertures 22 of the plate21, the lower end of the bolt 31 will be threaded through the threadedaperture of the eye 24 of the terminal to engage the eye 24 and thuslock the bolt 17 firmly in position and effectually prevent itsdisplacement so long as the vertical bolt 31 remains in its downwardposition. After the bolt 31 has been adjusted into locking relationswith the bolt 17 the nut 32 .is rotated to clamp the bolt 31 in positionand prevent its displacement so long as the nut 32 remains intact. Bythis simple means" an efficient burglar-proof window fasteningattachment is produced, which effectually protects the sash fromsurreptitious movement from the outside. As before stated the plate 21will be somewhat limited in its length as it is not desired to employthe locki. g device to hold the sash except when they are opened acomparatively short distance, or distances so shortas to prevent thepassage of a burglar or other person, while at the same time permittingample ventilation both above and below the sash.

The improved device is simple in construction, can be readily appliedand operates effectually for the purposes described.

What I claim is:

1. A horizontal bolt havingan eye at one end and adapted to be movablyconnected 'to a lower sash, a plate provided with a plurality ofapertures and adapted to be connected to an upper sash in position forthe apertures to he engaged one at a time with the horizontal bolt, anda bolt mounted for vertical movement in position to be engaged with theeye of the horizontal bolt.

2. A horizontal bolt having a threaded eye at one end and adapted to bemovably connected to a lower sash, a plate provided with a pluralityvofapertures and adapted to be connected to an upper sash in position forthe apertures to be engaged one at a time with the horizontal bolt, andathreaded bolt mounted for vertical movement in position to be engagedwith the threaded eye of the horizontal bolt.

3. A housing adapted to be connected to a lower sash, a plate having aplurality of apertures and adapted to be connected to an upper sash, ahorizontal bolt movable in said housing and' adapted to engage theapertures of said plate one at a time, a vertical bolt adapted to bemovably connected to a window frame, and means for clamping saidvertical bolt to said horizontal bolt.

. 4. A housing adapted to be connected to a lower sash, a plate having aplurality of apertures and adapted to be connected to an upper sash, ahorizontal bolt having a threaded eye and movable in said housing andengaging the apertures of said plate one at a time, and a threadedvertical bolt adapted to be movably connected to a window frame andadapted to engage the threaded eye of the horizontal bolt.

In testimony whereof I aflix my signature in presence of two witnesses.

WILLIAM CUNNINGHAM. a. 5.]

Vitnesscs:

AUGUST T. DALL, GEORGE WOLF.

Copies of this patent may be obtained for five cents each, layaddressing the Commissioner of ratenta,

\ Washington, D. G.

